Safety-lock for doors and the like



H. L. KLESS.

SAFETY LOCK FOR DOORS AND THE LIKE APPLICATION FILED MAY 15, 1920.

1,381,999 Patented June 21, 1921 INVENTOR lux/Q UNITED STATES HERMAN I. KLESS, OF HOUSTON, TEXAS.

SAFETY-LOCK FOR DOORS AND THE LIKE.

Application filed May 15,

To all whom it may concern:

Be it known that I, HERMAN L. KLnss, a citizen of Russia, residing at Houston, in the county of Harris and State of Texas,have invented certain new and useful Improvements in Safety-Locks for Doors and the like, of which the following is a specification.

This invention relates to new and useful improvements in a safety lock for doors and the like.

One object of the invention is to provide a lock of the character described which is specially adapted for application to a door whereby the door may be locked in'closed position from the inside.

Another object of the invention is to provide a lock which when applied to the door will not be accessible from the outside of the room which can not therefore be released by burglars or others on the outside of the room.

A further feature of the invention resides in the provision of a safety lock which is simple in construction and which may be cheaply and easily manufactured and readil applied to the door to be locked.

With the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings where- 1n,

Figure 1 shows an inside view of one of the jaws employed,

Fig. 2 shows an outside view of the other l Fig. 3 shows an end view of one of the cams v employed,

Fig. 4 shows a plan view thereof,

Fig. 5 shows a plan View of the lock ap plied to the door and,

Fig. 6 shows a side view of said lock.

Referring now more particularly to the drawings wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to one of the jaws employed and the numeral 2 refers to the other jaw. These jaws are fitted together as shown in Fig. 5 and have the slots 3 and 4., respectively, cut therethrough which are in alinement when the jaws are fitted together and a pin 5 works through said slots. Eccentrics 6 and 7 are rotatable on the respective ends of said pin and. Work between the respective Specification of Letters Patent.

Patented June 21, 1921.

1920. Serial No. 381,642.

bearings 8, 8 and 9, 9 which are thrown out fromthe material of the respective jaws 1 and 2. At one end the jaw 1 is turned outwardly forming the lip flange 10 and the corresponding end of the jaw 2 is turned outwardly forming the stop 11. The lower edge of the jaw 1 carries an upwardly curved flange 12 and the upper edge of the jaw 2 can ries a downwardly curved flange 12. The purposes of said flanges 12 and 12 will be hereinafter explained. In application the jaws are first opened, that is the jaw'2 is swung around on the pin 5 into open position and the lip flange 10 is then inserted in the latch socket 13 of the door facing 14. The door 15 is then closed and the jaw 2 then brought to closed position as shown in Fig. 5, the stop 11 abutting against the inner side of the door, the lower edge of said jaw 2 resting within the upwardly curved flange 12 and the downward curved flange 12 engagin over the upper edge of the jaw 1 which hold said last mentioned jaws firmly together.

It will be necessary to adjust the jaws relative to each other depending upon the thickness of the door 15 and the location of the latch socket 13. This adjustment may be accomplished by turning either or both of the eccentrics and the jaws will thereby be given a lengthwise adjustment relative to each other. Two eccentrics have been provided for the purpose of giving a greater range of adjustment. It is to be noted that when the lock is applied the stop 11 is forced firmly against the door by turning the eccentrics to accomplish this result.

What I claim is:

A safety lock including two jaws provided with alined slots, a bearing pin working through said slots, the corresponding ends of said jaws being outwardly turned forming a lip flange and a stop and eccentrics carried by the respective ends of said pin, bearings carried by said jaws between which the eccentrics work forming means for adjusting the jaws relative to each other.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HERMAN L. KLESS. Witnesses:

E. V. I-IARDWAY, J W. L V R. 

